What is a qEEG?
An Electro-Encephalogram (EEG) is a technique in which brain activity is measured by placing electrodes on the scalp. Since the invention of the EEG this is no longer to be forgotten from neurology. The research provides information about the electrical functioning of the brain, plays a crucial role in detecting abnormalities and helps evaluate treatments.
The Quantitative Electroencephalogram (qEEG) is a digital EEG that can be edited with special computer programs. Thanks to these programs, we can not only calculate the difference between activation states, but we also have the possibility to compare the functioning of a patient's brain with norm groups (people who do not show symptoms).
The main advantage of the qEEG is that we can locate the source of brain activity and additionally map a fully functional network.
How is a qEEG taken?
For a qEEG examination, a cap with electrodes is placed on the head. A guide gel is inserted into each electrode to ensure optimal contact between the skin and the electrode. After this preparation for about ten minutes, the brain activity is measured.
During the recording, the patient should close his eyes and relax the muscles of the mouth, jaws and neck.
A recording takes about 5 minutes. Unfortunately, we do not know the result immediately after the measurement, therefore the qEEG has to be edited. The processing of the 'raw data' takes place in several steps. First all artifacts (faults) are removed, only then do we calculate the differences with the norm population, the functional networks and a spectral analysis of each Brodmann area. The data is poured into a 3D image. This whole process can take up to an hour.
Some points of attention for when you have to undergo a qEEG:
• Do not use hair gel, hair spray or conditioner for the examination.
• Do not take alcohol, coffee or other stimulants for the study.
• Notify us when you use medication.